package Singleton_Pattern.window;

import java.util.ArrayList;
import java.util.List;

// -*-coding:utf-8 -*-
//人员：刘陆鑫
//班级：19软3
//学号；2019110218
public class Window {
    private static Window instance=null;
    private List windowList=null;

    private Window(){
        windowList=new ArrayList();
    }
    public static Window get_winddow(){
        if(instance==null){
            instance=new Window();
        }
        return instance;
    }

}
